Furnace-regulator.



H. F. QUICKEL. FURNACE REGULATOR. APPLICATION FILED NOV-v6, 1912.

, 1,104,311, I Patented July 21,191&

W1 NE S in 7/ 4. mawzw [NVENTOR s,

1n: voRms PETERS co, wnsumorou, u, c.

are such that at this time the dampers l5 and 17 are both wide open, the weight of the float 28 being suflicient to counterbalance the weight or weights 23 and the resistance of said dampers 15 and 17. As the pressure in the boiler rises the float rises in the float chamber, permitting the dampers gradually to close. \Vhen the damper 15 is fully closed the cut-off damper 17 will still remain slightly open, as is usually desirable, particularly when fresh coal has recently been applied to the fire. The draft is now substantially fully checked so far as is necessary under normal conditions. Should a high wind, however, prevail out side, so that the pressure in the boiler continues to rise, it is desirable that the damper 17 be fully closed. This is automatically accomplished in the present apparatus by the further rise of the float 28 which permits the weight 23 to fully close the damper 17 after the damper 15 has been brought to rest in closed position, as above described. When the boiler pressure falls, the float 28 descends and causes, first, the opening of the damper 17, and then the opening of both dampers 15 and 17, the operation being substantially the reverse of that above described. It will thus be seen that the dampers, and consequently the draft of the furnace, are automatically controlled so as to keep the boiler at a substantially constant normal pressure. In order to vary or adjust this normal pressure in accordance with the requirements the following means are provided.

Intermediate the pulleys 34 the chain or connector 33 passes about or carries a pulley 50from which is suspended a weight 51. Said weight 51 is suflicient to overcome or counterbalance the weight 23 together with the weight of the damper 15, but is lighter than the float28 and consequently has no influence on the position of the latter. By adjusting the position of the pulley 50 the chain or connector 33 is flexed more or less, and the effective length thereof varied.

For ailvjustably supporting the pulley 50 and weight 51 there is secured to said pulley a chain or other flexible connector 52 which preferably passes over one or more pulleys 53 in accordance with the desired arrange ment of the apparatus, said pulleys being suitably supported, as from the ceiling of the furnace room. Means are provided whereby the opposite end of the connector 52 may be secured at any one of a plurality of fixed points. To this end, in the construction shown, the following means are provided.

54L denotes a suitable support provided with a series of pins or knobs 55. The support 54 may be located in the furnace room or at any other convenient point on the samefloor or upon one of'the floors above.

The chain 52 passes through a fixed guide 56 secured to the support 54 and is provided adjacent its end with a ring or loop 57 which may be engaged with any one of the pins 55, as by means of an operating handle 58.

59 denotes a hook or other stop carried by the chain 52, said stop co5perating with the guide 56 to limit the movement of the, chain 52 and consequently the amount of flexure of the chain 33 should the ring 57 become accidentally disengaged from any of the pins 55.

IVith the arrangement shown, in order to increase the normal pressure of the boiler, the ring 57 is engaged with a pin 55 higher in the series. This causes the weight 51 to descend, increasing theflexure of the chain 33 and decreasing the effective length thereof, so that a greater rise of the float is required in order to produce the same effect upon the dampers. In order to decrease the normal boiler pressure the ring 57 is en gaged with a pin 55 lower in the series. It will be obvious that the support 54, particularly if located upon a floor above the furnace room, may be so arranged that the above operations for increasing or decreasing the normal pressure should be reversed, that is to say, in order to increase the pressure the ring 57 might be engaged with a pin 55 lower in the series, and vice versa.

WVhile the controlling mechanism has been described as being in communication with a boiler, which would be the case were the apparatus used for regulating a steam boiler furnace, as in a steam heating sys tem, this apparatus has been found to be equally useful in connection with hot water heating systems. IVhen so used the float chamber is located at the highest part of the system, and the rise and fall of the level of the water therein is caused by expansion and contraction of the water in the syssystems, but that it may be equally useful for regulating any furnace to which its various features are applicable.

Having thus described my invention, I claim:

1. The combination with a furnace having a smoke pipe, a normally open cut-olf damper in said smoke pipe, a normally closed air intake damper, and controlling mechanism for said dampers, of means connecting said dampers whereby both the said air intake damper is broughtto re closed posltiomanda counterweight carried n opening and'the closingmovements thereof are 'in' unison, said means being fadapted f to permit said cut-off damper to remain partly openwhen j said air intake damper is; brought to rest in closed position,and automatically factingnieansfor thereafter fully closing saidcut-o'fl damperwhen permitted by said controlling mechanism. f

2.,Th'e' combination with a furnace haying .a, smoke pipe, a cut-off damper in said smoke pipe opened by gravity,"an air intake damper closed by gravity, and controlling mechanism for said-"dampers, offa flexible connector connecting said dampers, pulley oyerwh'ich saidconnect'or passes, nie'ans con necting said I controlling me'cha ni sm with said flexibleconne'ctor, said cfonnector being arranged to cause both the opening andthe closing moyements offsaid damper s to be in unison but beingof'a length to permit said cuteofffdamper to remain partly open whe n I bysaid connector at a point reinovedfrom said air intake damper and between j the same and said pulley for closing said-cutoff damper independently of said intake damper. V

3, The combination with, a a furnace having one or more dampers, of mechanlsm for controlling said dampers, a flexible'connector connecting said dampers and controlling mechanism, means for supporting said con nector, and ad ustable means for flexingsaid connector to vary the efiective length thereof.

4-. The combination witha, furnace having a pair of dampers, of a flexible connector connecting said dampers, one or more pulleys over which said connector passes, mechanism for controlling said dampers, a second flexible connector connecting said first named connector and said controlling mechanism, and ad ustable means for flexing said last named connector to vary the efiective length thereof.

5. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, means for supporting said connector, and a separate adjustable pulley over which said connector passes for flexing the same to vary the effective length thereof.

- 6. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, a pair of pulleys over which said connector passes, a third pulley intermediate said first named pulleys, and means for adjusting said last named pulley.

7. The combination with a furnace hav-' ing one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting dampers and controlling m s h m m, li eig t. ea ne y] a nectonand' adjustablemeans for supporting I said weight; I

The combination witli 'a furnace having a smoke pipe,a normally open cutoff damper in said smoke pipe, a normally closed intake damper, and controlling mechanism for said dampers, of means connecting said" dampers whereby the opening and-"closing movements thereof are inunison, said 'mea ns being adapted to permit said cutf-ofi damper to remain partly open when saidair intake damper is brought to rest in closed position, means'for thereafter fully'closing said-cut-off damper whenper mitted by said controllingmechanism, a fleXi-j ible connector" connecting; saidf firstfnained connecting means with said controlling mechanism," and adjustable ,niean'sjfor flex ing said last named connector: towary th e effectivelengththereofq v Thecombination with a furnace having one or more dampers, of mechanism for'con 'trolling said dampers, a flexible connector connecting said dampers and controlling v mechanism, "aj'pulleyloyer which said connector passes, a welght 'lcarried by sald pulley, and us'table means f r i EPPO lting' said pulley.

10; The'co-mbinationwith a furna ce hay ingone or more dampers, of mechanism-for 'control l1ngsaid' "dampers, flexible con- "nect'or connecting saiddampers and controlling mechanism, a weight carried by said connector, a second flexible connector operatively connected at one end to said weight, and means whereby the opposite end of said' connector may be secured at a plurality of fixed points. L

11. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, adjustable means for flexing said connector to vary the effective length thereof, and means to limit the amount of said flexure.

12. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, a weight carried by said connector, a second flexible connector operatively connected at one end to said weight, a fixed guide through which said last named connector passes,-and a stop carried by said last named connector and cooperating with said guide to limit the movement of said connector.-

13. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, and adjustable means for flexing said connector to vary the effective length thereof, said means including a second flexible connector and means whereby the end of said last named connector may be secured at a plurality of fixed points.

14. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, a pair of pulleys over which said connector passes, a third pulley intermediate said first named pulleys, a weight carried by said last named pulley, a second flexible connector secured at one end to said last named pulley, and means whereby the opposite end of said last named connector may be secured at a plurality of fixed points.

15. The combination with a furnace having one or more dampers, of mechanism for controlling said dampers, a flexible connector connecting said dampers and controlling mechanism, means for supporting said connector, means for flexing said connector to vary the effective length thereof, and adjustable means for controlling said flexing means.

16. The combination with a furnace having a pair of dampers, of a flexible connector connecting said dampers, one or more pulleys over which said connector passes, mechanism for controlling said dampers, a

second flexible connector connecting said first-named connector and said controlling mechanism, a pair of pulleys over which said last-named connector passes, a third pulley carried by said last-named connector intermediate said last-named pulleys, a weight carried by said third pulley, and adjustable means for supporting said weight. a

17. The combination with a furnace having a smoke pipe, a normally open cut-off damper in said smoke pipe, a normally closed air intake damper, and controlling mechanism for said dampers, of means cOnnecting said dampers with each other whereby the opening and closing movements there- HENRY F. QUIGKEL.

WVitnesses M. B. ODONNELL, W. H. CRowELn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washingtomfi. G. 

